feat(platform): route scheduler notifications through platform messenger

tests/GmRelay.Bot.Tests/Infrastructure/Scheduling/SchedulerNotificationSourceTests.cs

@@ -0,0 +1,53 @@
+namespace GmRelay.Bot.Tests.Infrastructure.Scheduling;
+
+public sealed class SchedulerNotificationSourceTests
+{
+    [Theory]
+    [InlineData("src/GmRelay.Shared/Features/Confirmation/SendConfirmation/SendConfirmationHandler.cs")]
+    [InlineData("src/GmRelay.Shared/Features/Confirmation/HandleRsvp/HandleRsvpHandler.cs")]
+    [InlineData("src/GmRelay.Shared/Features/Reminders/SendOneHourReminder/SendOneHourReminderHandler.cs")]
+    [InlineData("src/GmRelay.Shared/Features/Reminders/SendJoinLink/SendJoinLinkHandler.cs")]
+    public async Task SchedulerNotificationHandlers_ShouldUsePlatformMessengerWithoutSdkClients(string relativePath)
+    {
+        var source = await ReadRepositoryFileAsync(relativePath);
+
+        Assert.True(
+            source.Contains("IPlatformMessenger", StringComparison.Ordinal) ||
+            source.Contains("PlatformDirectNotificationSender", StringComparison.Ordinal),
+            "Handler should use IPlatformMessenger directly or through PlatformDirectNotificationSender.");
+        Assert.DoesNotContain("Telegram.Bot", source, StringComparison.Ordinal);
+        Assert.DoesNotContain("ITelegramBotClient", source, StringComparison.Ordinal);
+        Assert.DoesNotContain("NetCord", source, StringComparison.Ordinal);
+        Assert.DoesNotContain("RestClient", source, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task DiscordProgram_ShouldRegisterSharedSchedulerForDiscordPlatform()
+    {
+        var program = await ReadRepositoryFileAsync("src/GmRelay.DiscordBot/Program.cs");
+
+        Assert.Contains("PlatformSchedulerOptions(PlatformKind.Discord)", program, StringComparison.Ordinal);
+        Assert.Contains("AddHostedService<SessionSchedulerService>", program, StringComparison.Ordinal);
+        Assert.Contains("DbSessionTriggerStore", program, StringComparison.Ordinal);
+        Assert.Contains("SendConfirmationHandler", program, StringComparison.Ordinal);
+        Assert.Contains("SendJoinLinkHandler", program, StringComparison.Ordinal);
+        Assert.Contains("SendOneHourReminderHandler", program, StringComparison.Ordinal);
+    }
+
+    private static async Task<string> ReadRepositoryFileAsync(string relativePath)
+    {
+        var directory = new DirectoryInfo(AppContext.BaseDirectory);
+        while (directory is not null)
+        {
+            var candidate = Path.Combine(directory.FullName, relativePath);
+            if (File.Exists(candidate))
+            {
+                return await File.ReadAllTextAsync(candidate);
+            }
+
+            directory = directory.Parent;
+        }
+
+        throw new FileNotFoundException($"Could not locate repository file '{relativePath}'.");
+    }
+}

tests/GmRelay.Bot.Tests/Infrastructure/Scheduling/SessionSchedulerServiceTests.cs

@@ -1,7 +1,8 @@
-using GmRelay.Bot.Features.Confirmation.SendConfirmation;
-using GmRelay.Bot.Features.Reminders.SendJoinLink;
-using GmRelay.Bot.Features.Reminders.SendOneHourReminder;
-using GmRelay.Bot.Infrastructure.Scheduling;
+using GmRelay.Shared.Features.Confirmation.SendConfirmation;
+using GmRelay.Shared.Features.Reminders.SendJoinLink;
+using GmRelay.Shared.Features.Reminders.SendOneHourReminder;
+using GmRelay.Shared.Infrastructure.Scheduling;
+using GmRelay.Shared.Platform;
 using Microsoft.Extensions.Logging.Abstractions;
 
 namespace GmRelay.Bot.Tests.Infrastructure.Scheduling;
@@ -211,4 +212,9 @@ public sealed class SessionSchedulerServiceTests
             return Task.FromResult<IReadOnlyList<Guid>>(SessionsNeedingJoinLink);
         }
     }
+
+    private sealed class FakeSystemClock : ISystemClock
+    {
+        public DateTimeOffset UtcNow { get; set; } = DateTimeOffset.UtcNow;
+    }
 }

tests/GmRelay.Bot.Tests/Infrastructure/Scheduling/SessionTriggerStoreSourceTests.cs

@@ -0,0 +1,32 @@
+namespace GmRelay.Bot.Tests.Infrastructure.Scheduling;
+
+public sealed class SessionTriggerStoreSourceTests
+{
+    [Fact]
+    public async Task DbSessionTriggerStore_ShouldFilterTriggersByConfiguredPlatform()
+    {
+        var source = await ReadRepositoryFileAsync(
+            "src/GmRelay.Shared/Infrastructure/Scheduling/ISessionTriggerStore.cs");
+
+        Assert.Contains("PlatformSchedulerOptions", source, StringComparison.Ordinal);
+        Assert.Contains("JOIN game_groups g ON g.id = s.group_id", source, StringComparison.Ordinal);
+        Assert.Contains("g.platform = @Platform", source, StringComparison.Ordinal);
+    }
+
+    private static async Task<string> ReadRepositoryFileAsync(string relativePath)
+    {
+        var directory = new DirectoryInfo(AppContext.BaseDirectory);
+        while (directory is not null)
+        {
+            var candidate = Path.Combine(directory.FullName, relativePath);
+            if (File.Exists(candidate))
+            {
+                return await File.ReadAllTextAsync(candidate);
+            }
+
+            directory = directory.Parent;
+        }
+
+        throw new FileNotFoundException($"Could not locate repository file '{relativePath}'.");
+    }
+}

tests/GmRelay.Bot.Tests/Infrastructure/Telegram/TelegramPlatformMessengerSourceTests.cs

@@ -39,6 +39,26 @@ public sealed class TelegramPlatformMessengerSourceTests
         Assert.Contains("BatchMessageEditor.EditBatchMessageAsync", source, StringComparison.Ordinal);
         Assert.Contains("AnswerCallbackQuery", source, StringComparison.Ordinal);
         Assert.Contains("SendDocument", source, StringComparison.Ordinal);
+        Assert.Contains("SendConfirmationRequestAsync", source, StringComparison.Ordinal);
+        Assert.Contains("UpdateConfirmationRequestAsync", source, StringComparison.Ordinal);
+        Assert.Contains("SendJoinLinkNotificationAsync", source, StringComparison.Ordinal);
+        Assert.Contains("SendDirectSessionNotificationAsync", source, StringComparison.Ordinal);
+        Assert.Contains("UpdateRescheduleVoteAsync", source, StringComparison.Ordinal);
+        Assert.Contains("messageThreadId", source, StringComparison.Ordinal);
+        Assert.Contains("ParseMode.Html", source, StringComparison.Ordinal);
+        Assert.Contains("InlineKeyboardButton.WithCallbackData", source, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task RescheduleVotingDeadlineService_ShouldUsePlatformMessengerForVoteMessageUpdates()
+    {
+        var source = await ReadRepositoryFileAsync(
+            "src/GmRelay.Bot/Features/Sessions/RescheduleSession/RescheduleVotingDeadlineService.cs");
+
+        Assert.DoesNotContain("ITelegramBotClient", source, StringComparison.Ordinal);
+        Assert.DoesNotContain(".EditMessageText(", source, StringComparison.Ordinal);
+        Assert.Contains("UpdateRescheduleVoteAsync", source, StringComparison.Ordinal);
+        Assert.Contains("IPlatformMessenger", source, StringComparison.Ordinal);
     }
 
     private static async Task<string> ReadRepositoryFileAsync(string relativePath)

tests/GmRelay.Bot.Tests/Infrastructure/Telegram/TelegramTopicIntegrationSmokeTests.cs

@@ -22,25 +22,25 @@ public sealed class TelegramTopicIntegrationSmokeTests
     [Fact]
     public async Task GroupNotifications_ShouldSendToStoredForumTopic()
     {
-        var confirmationHandler = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Confirmation/SendConfirmation/SendConfirmationHandler.cs");
-        var joinLinkHandler = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Reminders/SendJoinLink/SendJoinLinkHandler.cs");
-        var rsvpHandler = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Confirmation/HandleRsvp/HandleRsvpHandler.cs");
+        var confirmationHandler = await ReadRepositoryFileAsync("src/GmRelay.Shared/Features/Confirmation/SendConfirmation/SendConfirmationHandler.cs");
+        var joinLinkHandler = await ReadRepositoryFileAsync("src/GmRelay.Shared/Features/Reminders/SendJoinLink/SendJoinLinkHandler.cs");
+        var rsvpHandler = await ReadRepositoryFileAsync("src/GmRelay.Shared/Features/Confirmation/HandleRsvp/HandleRsvpHandler.cs");
         var cancelHandler = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Sessions/CreateSession/CancelSessionHandler.cs");
         var initiateRescheduleHandler = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Sessions/RescheduleSession/InitiateRescheduleHandler.cs");
         var rescheduleInputHandler = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Sessions/RescheduleSession/HandleRescheduleTimeInputHandler.cs");
         var rescheduleDeadlineService = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Sessions/RescheduleSession/RescheduleVotingDeadlineService.cs");
+        var telegramMessenger = await ReadRepositoryFileAsync("src/GmRelay.Bot/Infrastructure/Telegram/TelegramPlatformMessenger.cs");
 
         Assert.Contains("int? ThreadId", confirmationHandler, StringComparison.Ordinal);
         Assert.Contains("s.thread_id AS ThreadId", confirmationHandler, StringComparison.Ordinal);
-        Assert.Contains("messageThreadId: session.ThreadId", confirmationHandler, StringComparison.Ordinal);
+        Assert.Contains("ExternalThreadId", confirmationHandler, StringComparison.Ordinal);
 
         Assert.Contains("int? ThreadId", joinLinkHandler, StringComparison.Ordinal);
         Assert.Contains("s.thread_id AS ThreadId", joinLinkHandler, StringComparison.Ordinal);
-        Assert.Contains("messageThreadId: session.ThreadId", joinLinkHandler, StringComparison.Ordinal);
+        Assert.Contains("ExternalThreadId", joinLinkHandler, StringComparison.Ordinal);
 
-        Assert.Contains("int? ThreadId", rsvpHandler, StringComparison.Ordinal);
-        Assert.Contains("s.thread_id AS ThreadId", rsvpHandler, StringComparison.Ordinal);
-        Assert.Contains("messageThreadId: session.ThreadId", rsvpHandler, StringComparison.Ordinal);
+        Assert.Contains("PlatformMessageRef ConfirmationMessage", rsvpHandler, StringComparison.Ordinal);
+        Assert.Contains("UpdateConfirmationRequestAsync", rsvpHandler, StringComparison.Ordinal);
 
         Assert.Contains("int? MessageThreadId", cancelHandler, StringComparison.Ordinal);
         Assert.Contains("TelegramPlatformIds.Group(command.ChatId, command.MessageThreadId)", cancelHandler, StringComparison.Ordinal);
@@ -55,6 +55,9 @@ public sealed class TelegramTopicIntegrationSmokeTests
         Assert.Contains("int? ThreadId", rescheduleDeadlineService, StringComparison.Ordinal);
         Assert.Contains("s.thread_id AS ThreadId", rescheduleDeadlineService, StringComparison.Ordinal);
         Assert.Contains("TelegramPlatformIds.Group(telegramFields.TelegramChatId, telegramFields.ThreadId)", rescheduleDeadlineService, StringComparison.Ordinal);
+
+        Assert.Contains("messageThreadId", telegramMessenger, StringComparison.Ordinal);
+        Assert.Contains("ExternalThreadId", telegramMessenger, StringComparison.Ordinal);
     }
 
     private static async Task<string> ReadRepositoryFileAsync(string relativePath)